Дисертації з теми "Contatto visivo"
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Bellini, Luciano Porto. "Estudo comparativo entre o telescópio com lente de contato e o telescópio convencional em pacientes com baixa visão." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/17787.
Повний текст джерелаPurpose: To compare the conventional telescope (CT) with the contact lens telescope (CLT) in patients with age-related macular degeneration (AMD) and low-vision, with respect to visual acuity (VA), visual field (VF), patient satisfaction with the vision provided by the telescope (VS), telescope use difficulties (UD) and patient satisfaction with the cosmetic appearance of the telescope (CS). Methods: In a masked randomized clinical trial, 12 patients with AMD and low-vision were enrolled in 2 groups with 6 patients each: group 1 (CLT use) and group 2. (CT use) The telescopes used in this study were standardized to have the same magnification power. (2.8x) Visual field and VA were obtained before and during the telescope use, while VS, UD and CS were obtained after the telescope use. Results: There were no significant differences between groups at baseline. Both groups achieved VA improvement with telescopes compared to baseline (P=0.002 in CLT group and P<0.001 in CT group) and there were no significant differences between groups in this regard. Visual field was reduced by 15° in CLT group (P<0.001) and by 54.3° in CT group (P<0.001) compared to baseline, and VF differences between groups were also significant during telescope use. (P<0.001) Scores observed in both groups were similar in regard to VS. Telescope use difficulties were significant higher in CLT group (P=0.003) as well as CS scores (P<0.001) compared to CT group. Conclusions: Both telescopes provide similar improvement in VA in AMD patients with low-vision, but CLT caused less VF reduction than CT use. Patient satisfaction with the cosmetic appearance of the telescope was higher in CLT group, but UD was also higher in this group compared to CT group.
Irwin, Kenneth M. "Wilderness visitor response to ranger educational contacts at trailheads." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/91123.
Повний текст джерелаM.S.
Xu, Yan. "Non-contact vision-based deformation monitoring on bridge structures." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/34643.
Повний текст джерелаCollumeau, Jean-François. "Commande sans contact d'éclairage opératoire par méthodes de vision informatique." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2001.
Повний текст джерелаAsepsis preservation in operating rooms is nowadays compulsory for avoiding the spread of hospital-acquired diseases to patients during surgeries. Drastic asepsis measures aim at preserving the sterile area of the operating room from infective agents.These measures forbid surgeons from interacting with non-sterile devices. Surgeons wish nonetheless having direct control over some of these devices.The works presented in this thesis relate to the development of a Human-Computer Interface enabling remote, hence without transmission of infective agents, non-contact control over such devices.Following on from previous authors' works in the literature, an image processing chain based on computer vision techniques and a wearable camera prototype have been developed in order to achieve these goals.This document presents the comparative studies led with algorithms issued from the literature with the aim of selecting the most suitable for using in the processing chain. A dedicated geometry-based hand descriptor is introduced, and cooperative approaches are investigated in relation with the hand localization and posture classification steps.The performance achieved by the processing chain in various situations are quantified using extensive picture and video databases acquired in conditions close to those of the operating room. Synthetic pictures created using an ad hoc virtual model of the hand are used as well for this evaluation.A demonstrator composed of the developed processing chain, a wearable camera prototype and a surgical lighting arm simulator enables the illustration of the possiblities offered by the system developed during this thesis
Pham, Tu-Hoa. "Contact force sensing from motion tracking." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT287/document.
Повний текст джерелаThe human sense of touch is of fundamental importance in the way we perceive our environment, move ourselves, and purposefully interact with other objects or beings. Thus, contact forces are informative on both the realized task and the underlying intent. However, monitoring them with force transducers is a costly, cumbersome and intrusive process. In this thesis, we investigate the capture of haptic information from motion tracking. This is a challenging problem, as a given motion can generally be caused by an infinity of possible force distributions in multi-contact. In such scenarios, physics-based optimization alone may only capture force distributions that are physically compatible with a given motion, rather than those really applied. In contrast, machine learning techniques for the black-box modelling of kinematically and dynamically complex structures are often prone to generalization issues. We propose a formulation of the force distribution problem utilizing both approaches jointly rather than separately. We thus capture the variability in the way humans instinctively regulate contact forces while also ensuring their compatibility with the observed motion. We present our approach on both manipulation and whole-body interaction with the environment. We consistently back our findings with ground-truth measurements and provide extensive datasets to encourage and serve as benchmarks for future research on this new topic
Rueff, Erin M. "Contact Lens Discomfort, Vision Correction Preferences, and Accommodative Treatment in Presbyopic and Non-Presbyopic Contact Lens Wearers." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1529583462118691.
Повний текст джерелаKobeissi, Habib. "Théorie de la vision et du contact entre objets linéaires et parallèles du plan." Paris, EHESS, 1987. http://www.theses.fr/1987EHES0070.
Повний текст джерелаScarl, Daniel L. "Eye contact perception at distances up to six meters." PDXScholar, 1985. https://pdxscholar.library.pdx.edu/open_access_etds/3693.
Повний текст джерелаAchor, Sam Ndu. "Family visits or contact to dementia elderly at long term care facilities." CSUSB ScholarWorks, 2000. https://scholarworks.lib.csusb.edu/etd-project/1581.
Повний текст джерелаAlmada, Isabela, Gérson Tontini, and Universidade Regional de Blumenau Programa de Pós-Graduação em Administração. "Identificação de atributos criticos de satisfação em serviços de arquitetura :visão do cliente vs visão do arquiteto /." reponame:Biblioteca Digital de Teses e Dissertações FURB, 2008. http://www.bc.furb.br/docs/DS/2008/332750_1_1.pdf.
Повний текст джерелаBernardet, Laurent. "Diffusion et holographie de la peau en lumière blanche : recherche de méthodes pertinentes pour une caractérisation sans contact." Besançon, 1994. http://www.theses.fr/1994BESA0427.
Повний текст джерелаWhatham, Andrew. "The effect of optical or pharmacological perturbation of focus on refractive development and ocular growth in the common marmoset." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312637.
Повний текст джерелаKeay, Lisa Jane Optometry & Vision Science Faculty of Science UNSW. "Public health impact of contact lens related microbial keratitis." Awarded by:University of New South Wales. School of Optometry and Vision Science, 2006. http://handle.unsw.edu.au/1959.4/26307.
Повний текст джерелаChu, Byoung Sun. "The impact of presbyopic spectacles and contact lenses on driving performance." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/31885/1/Byoung_Chu_Thesis.pdf.
Повний текст джерелаMagill, Christine. "Penalising prisoners, penalising families : the difficulties of maintaining contact with prisoners through prison visits." Thesis, University of Leicester, 2001. http://hdl.handle.net/2381/30120.
Повний текст джерелаRueff, Erin. "Contact lens induced dry eye and binocular vision disorders: A study of similar symptoms." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397167126.
Повний текст джерелаMatthews, Mark Walter. "A machine vision based non-contact measuring tool for mensuration in industry and manufacturing." Master's thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/17012.
Повний текст джерелаThis thesis report discusses the design, implementation and testing of a non-contact measuring tool based on the principle of stereo photogrammetry. The system uses a pair of CCD video cameras and a frame-grabber in a PC to capture the pair of images this requires. The software on the PC then measures the image co-ordinates of points selected by the user and transforms them into space co-ordinates for the points. The transformation requires knowledge of the relative positions and orientations of the cameras. This is found in a calibration stage from images of a calibration frame. The cameras are mounted on a bar, which guarantees that the relative positions and orientations of the cameras remain invariant within certain limits. This makes the system portable.
Prieto, Flavio Redarce Tanneguy Lepage Richard Boulanger Pierre. "Métrologie assistée par ordinateur apport des capteurs 3D sans contact /." Villeurbanne : Doc'INSA, 2000. http://docinsa.insa-lyon.fr/these/pont.php?id=prieto.
Повний текст джерелаGifford, Kate L. "Binocular visual function in orthokeratology contact lens wear for myopia." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/116154/1/Kate_Gifford_Thesis.pdf.
Повний текст джерелаPrieto, Flavio. "Métrologie assistée par ordinateur : apport des capteurs 3D sans contact." Lyon, INSA, 1999. http://theses.insa-lyon.fr/publication/1999ISAL0117/these.pdf.
Повний текст джерелаThis work is related with the automatic inspection of manufactured parts by using the CAD model of the part and the cloud of 3D points obtained by the digitization of the part with a range sensor. Initially we determine and model the parameters which influence the accuracy of the range sensor in the digitalization of a part. This model is used to produce automatically a sensing plan in order to acquire completely and precisely the geometry of a surface or of a complete part. A sensing plan consists of a set of viewpoints which defined the exact position and orientation of the camera relative to the part and other digitizatioin parameters. The goal of the sensing plan is to improve the accuracy of the depth measurement in order to be able to use the cloud of 3D points in inspection tasks. The requirements of the system are the exact position and orientation of the part and its CAD model in IGES format. There is no limitation in the geometry of the part to be digitized, hence simple / complex parts can be scanned. After registration between the 3D data and the CAD model, the cloud is segmented. The segmentation is fulfiled by computing the minimal distance from the 3D point to the surfaces (of the CAD model) and comparing some local geometric properties of the 3D point with the closest one on the surfaces. Segementation results are used to check dimensional and geometric tolerances of the part. By using the model of the noise we have introduced a dispersion value on each 3D point acquired by the range sensor. This value of dispersion is presented as a weight factor in the results of the dispersion
Dugáček, Ján. "Automatizované optické měření kontaktního úhlu kapky." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377330.
Повний текст джерелаCarter, Nakia J., Rick L. Wallace, and Kefeng (Maylene) Qiu. "Blending Phone Contacts and Site Visits to Promote Rural Outreach Services: A Randomized Controlled Trial to Assess Usage." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etsu-works/8750.
Повний текст джерелаAlves, Sara Gonçalves. "Suspeita de reativação de toxoplasmose, adaptação de lentes de contacto de silicone-hidrogel tóricas, excesso acomodativo." Master's thesis, Universidade da Beira Interior, 2013. http://hdl.handle.net/10400.6/1493.
Повний текст джерелаGiner, Tort Anna. "Optical and visual characterization of multifocal contact lenses and multifocal intraocular lenses." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/663449.
Повний текст джерелаLa visió és entesa i, universalment acceptada, com el sentit humà més valorat .Aquesta esta estructurada en tres parts principals: el sistema òptic (l'ull), el fot-sensor (la retina ocular) iel processador (el cervell). Si una d'aquestes parts es veu afectada per una disfunció o malaltia, la visió pot arribar a ser de molt baixa qualitat i, fins hi tot, inexistent Una de les disfuncions més comunes és la presbícia. La presbícia és una disfunció lligada a l'edat que pateix tota lla població a partir dels 40 anys, aproximadament. Consisteix en la pèrdua de la capacitat d'enfocar objectes propers (acomodació). Actualment, es troba un ampli nombre de possibles correccions. Per una banda, tenim les correccions temporals, com ulleres o lents de contacte progressives, i, per l'altre, correccions permanents, com lents intraoculars multifocals , ablacions corneals multifocals, lents intraoculars acomodatives, sistemes de monovisió, o modificacions esclerals, entre altres. Una altre disfunció associada a l'edat és la cataracta, la qual crea la opacificació del cristal·lí impedint una visió nítida. Conseqüentment, la cataracta és una de la deficiències visuals més estesa a partir dels 60 anys, afectant a la meitat de la població entre els 75 i els 85 anys . La única solució per eliminar les cataractes és eliminant les fibres opacificades i substituir-les per una lent intraocular quirúrgicament. Donat que tots els pacients amb cataractes són, a la vegada, prèsbites, està justificat que un nombre de pacients decideixi implantar-se lents intraoculars multifocals per substituir el seu cristal·lí. D'aquesta manera es solucionen dues degeneracions associades a l'edat en una sola cirurgia. Els joves prèsbites acostumen a optar per correccions prèsbites temporals, mentre que molts dels prèsbites amb cataractes opten per solucions permanents. Algunes de les correccions de la presbícia, com les lents de contacte o intraoculars multifocals , estan basades en el principi de visió simultània. Els dissenys òptics d'aquest tipus de lents són molt complexos, cosa que fa que la seva caracterització sigui molt complicada. Quan aquestes lents van aparèixer al mercat, només era possible caracteritzar-les òpticament abans de la seva implantació o adaptació de manera in vitro, i de caracteritzar-les visualment després de la seva adaptació o implantació de manera in vivo. Actualment, i gracies a tots els avenços tecnològics, diferents instruments clínics han estat desenvolupats per realitzar mesures de les qualitats visuals abans de la seva implantació. Tots ells, es basen en simular-li al pacient la visió que tindria després de ser implantat. Per un altre cantó, alguns prototips experimentals iaberrometres o sistemes de doble-pas comercials han estat utilitzats per dur a terme la caracterització de la qualitat in vim en pacients implantats o adaptats amb sistemes multifocals, pero diferents problemes han estat plantejats. Tenint en compte tota aquesta informació, el principal objectiu d'aquesta tesi ha estat la de dissenyar i muntar un nou sistema de doble-pas d'enfocament asimètric de camp obert que fos capaç de fer una caracterització de la qualitat òptica in vivo de pacients implantats o adaptats amb lents de contacte o intraoculars multifocals. I per arribar a aquest objectiu, s'han dut a terme els següents passos: Revisió de les correccions per a la presbícia i caracterització d'elles (Estudi clínic de la sobre-refracció objectiva de pacients adaptats amb lents de contacte multifocals); Validació de la capacitat de mesura d'un simulador comercial (Estudi clínic amb el simulador comercial VirtlOL (1OLens S.L); Disseny i muntatge del sistema de doble-pas amb enfocament asimètric (Disseny opto-mecànic/ Validació de tots els components del sistema/ Validació òptica del sistema); Programació dels programes informàtics que gestionen el sistema i processen
Souza, Junior Joane Augusto de. "Avaliação da dureza Knoop da resina acrilica polimerizada por luz visivel, quando em contato com metal, e de sua rugosidade de superficie." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288643.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
Made available in DSpace on 2018-08-03T22:58:51Z (GMT). No. of bitstreams: 1 SouzaJunior_JoaneAugustode_D.pdf: 1017304 bytes, checksum: 9458ca58da06b1bc811cd227579cfbc2 (MD5) Previous issue date: 2004
Resumo: O objetivo deste estudo foi avaliar e comparar a rugosidade e dureza Knoop de uma resina acrílica fotopolimerizável com resinas termopolimerizáveis, quando em contato com metal. Foram confeccionadas 12 amostras medindo 30 mm de diâmetro e 4 mm de espessura, contendo em seu interior uma barra metálica de cobalto-cromo, exposta em uma das superfícies da amostra, para cada tipo de resina utilizada, sendo: grupo 1) resina acrílica polimerizada por energia de microondas (Onda-Cryl®); grupo 2) resina acrílica fotopolimerizável (Triad®); grupo 3) resina acrílica termopolimerizável convencional (Clássico®). As amostras foram acabadas e polidas com lixa d¿água de granulação 320, 400, 600 e 1000, e utilizada pasta de diamante de 1 µm. A rugosidade superficial (µm) da resina acrílica foi avaliada em equipamento Surfcorder SE 1700 calibrado com comprimento de onda limite de 0,8mm, percurso de medição de 3,2mm e velocidade de 0,5mm/s. A dureza Knoop (Kg/mm2) foi avaliada em equipamento Shimadzu HMV-2000 aplicando-se carga de 25 gramas por 10 segundos, nas distâncias de 50, 100, 200, 400 e 800 µm da barra metálica. Ambas as análises foram realizadas na mesma superfície polida da amostra, mas em lados opostos em relação ao metal. Os resultados de rugosidade foram submetidos a análise de variânica, teste de Tukey e teste t, e para dureza Knoop foram realizados a análise de variância, teste de Tukey e teste de Kruskal-Wallis. Foi observada diferença significativa (p < 0,05) tanto na dureza quanto na rugosidade da resina, sendo que a resina fotopolimerizável (grupo 2) apresentou os maiores valores (Ra = 0,11 e KHN 50 = 20,20; KHN 100 = 20,96; KHN 200 = 20,88; KHN 400 = 21,01 e KHN 800 = 21,44). Em relação às distâncias do metal não houve diferença significante (p > 0,05) para a dureza em 1 nenhum dos grupos estudados (grupo 1: KHN 50 =16,78; KHN 100 = 17,16; KHN 200 = 17,29; KHN 400 = 17,87; KHN 800 = 17,98; e grupo 3: KHN 50 = 17,07; KHN 100 = 17,06; KHN 200 = 17,21; KHN 400 = 17,78; KHN 800 = 17,96). Com estes resultados pode-se concluir que a resina acrílica fotopolimerizável apresenta maior rugosidade e dureza Knoop superficiais, em relação aos outros grupos, e o metal não interferiu na dureza do material
Abstract: The aim of this work was to evaluate and compare roughness and Knoop microhardness values of a visible light-cured resin to heat-cured resins, when in contact with metal. Therefore, twelve samples of 30 mm in diameter and 4 mm in thickness were made, containing a cobalt-chromium metal bar exposed in one of the surfaces, to each group of the according to the resin and polymerizing method: group 1) microwave oven-cured acrylic resin (Onda Cryl®); group 2) visible light-cured acrylic resin (Triad®); group 3) heat-cured in water acrylic resin (Clássico®). After processing, all samples were ground with 360, 400, 600 and 1000-grit abrasive papers in a polishing machine under refrigeration, followed by polishing cloths and 1-micron diamond suspension. Roughness of the acrylic resins were evaluated in micrometers (µm) with a surface texture measurer Surfcorder SE 1700 calibrated with a cut-off value of 0.8 mm and a tracing length of 3.2mm in 0.5mm/s. Knoop Microhardness (Kg/mm2) was assayed using a microhardness tester Shimadzu HMV-2000 set on 25 gram for 10 seconds, at 50, 100, 200, 400 and 800 µm from the metal bar. Roughness values were submitted to analysis of variance, Tukey¿s test and t-test and Knoop hardness values were submitted to analysis of variance, Tukey¿s test and Kruskal-Wallis¿ test. Statistically significant differences ( p < 0.05) were found for microhardness and roughness values, where group 2 presented the highest values (Ra = 0.11 and KHN 50 = 20.20; KHN 100 = 20.96; KHN 200 = 20.88; KHN 400 = 21.01 and KHN 800 = 21.44). Microhardness values in different distances from the metal bar were not significantly different (p < 0.05) (group 1: KHN 50 =16.78; KHN 100 = 17.16; KHN 200 = 17.29; KHN 400 = 17.87; KHN 800 = 17.98; and group 3: KHN 50 = 17.07; KHN 3 100 = 17.06; KHN 200 = 17.21; KHN 400 = 17.78; KHN 800 = 17.96). It was concluded that heat-cured in water acrylic resin showed the highest roughness and surface Knoop hardness values when compared to the other groups. Also, metal did not influence acrylic¿s hardness values
Doutorado
Protese Dental
Doutor em Clínica Odontológica
Mussi, Claudia Motta. "Efeito da visita domiciliar intercalada com contato telefônico no conhecimento da doença, nas habilidades para o autocuidado e na adesão de pacientes com insuficiência cardíaca e internação recente : ensaio clínico randomizado." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/76157.
Повний текст джерелаMas, Aixalà Enric. "Caracterització dels paràmetres corneals per a l'adaptació de lents de contacte en casos de queratocon." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/667313.
Повний текст джерелаIntroducció: Tant la caracterització de la superfície corneal com la classificació del queratocon en diferents estadis de gravetat es troben en contínua evolució, fruit no només de l’avenç tecnològic, sinó també de la definició de nous paràmetres amb els quals es fan aportacions que ajuden a comprendre millor la geometria, l’estat i l’evolució dels ulls afectats, en comparació amb els ulls sans. És en aquesta evolució del coneixement del queratocon que pren importància l’anàlisi de l’afectació que aquesta patologia produeix en la morfologia corneal perifèrica amb l’objectiu de fer una proposta satisfactòria de disseny de lents de contacte (LC) corneals de gran diàmetre per adaptar a pacients amb queratocon, amb l’objectiu de millorar la seva qualitat de visió amb la màxima comoditat possible i la mínima interferència en al fisiologia ocular. Estudis realitzats: L’objectiu d’aquesta sèrie d’estudis és aportar un millor coneixement de la geometria corneal en tota la seva extensió i, en particular, esbrinar si els canvis corneals produïts en el queratocon són predominantment corneals, limbals/esclerals o una combinació d’ambdós; una informació rellevant a l’hora d’adaptar LC corneals de gran diàmetre en pacients amb diferents estadis d’evolució de la patologia, com a complement o, fins i tot, alternativa a les opcions actuals d’adaptació. Així, s’han analitzat, a través de les imatges de Scheimpflug en diferents meridians oculars, una sèrie de paràmetres corneals i del segment anterior de l’ull a pacients afectats de queratocon en diferents estadis d’evolució. Un dels fets destacables d’aquest estudi suposa l’anàlisi, no només de paràmetres provinents del software propi del Pentacam HR®, sinó de paràmetres mesurats manualment sobre les imatges de Scheimpflug que el propi software no determina, incloent-hi la definició d’un nou paràmetre (distance to the lens, DL, o distància des del punt final de mesurament de la sagita al cristal·lí) que s’ha demostrat prou útil per a la caracterització corneolimbal desitjada. El següent pas ha estat analitzar la perifèria corneal a través del mesurament dels angles corneals perifèrics (corresponents a una longitud de corda d’entre 8,6 i 12,6 mm) i el grau de simetria de revolució perifèrica (diferència entre l’angle corneal perifèric més petit i més gran per a cada ull en particular) amb una metodologia creada sense altre referent anterior, donat que no es tenia constància que les zones estudiades en aquesta investigació haguessin estat mai investigades amb les imatges de Scheimpflug. Finalment, s’ha fet una proposta d’un nou disseny de LC corneal de gran diàmetre per a l’adaptació en casos de queratocon i s’ha desenvolupat un nou mètode de càlcul dels paràmetres d’aquestes lents a partir dels mesuraments fets prèviament sobre les imatges de Scheimpflug. Per tal de fer una comprovació pràctica que pogués aportar uns primers resultats en relació a la viabilitat de l’adaptació d’aquestes LC i del nou mètode de càlcul, s’han realitzat unes primeres experiències clíniques en 20 ulls afectats de queratocon (10 pacients) en diferents estadis d’evolució. Conclusions: El queratocon es troba associat a un increment de la profunditat de la cambra anterior que, al seu torn, implica valors més elevats, tant de la sagita interna (mesurada des de l’endoteli), com de la distància DL. L’increment de la DL seria indicatiu d’un desplaçament cap a la part anterior de l’ull de l’àrea de transició entre còrnia i esclera, amb referència al pla de l’iris. Per tant, els canvis produïts pel queratocon no només afecten la còrnia, sinó tot el segment anterior de l’ull, incloses les estructures límbiques. Existeix un increment significatiu de l’angle corneal perifèric en els estadis inicials del queratocon, el qual no sembla continuar a mesura que avança la patologia. L’angle perifèric mitjà en ulls amb queratocon és, de mitjana, 0,69° més gran que el dels ulls sans. El grau de simetria de revolució perifèrica no presenta diferències entre els grups d’ulls sans i ulls amb queratocon. Per tant, l’adaptació de LC que es recolzen sobre la perifèria corneal i tenen simetria de revolució en aquesta zona serà tan satisfactòria en ulls amb queratocon com ho és en ulls sans. Aquesta conclusió ha estat corroborada amb els resultats obtinguts en l’estudi clínic preliminar, amb uns bons resultats pel que fa a la millora de l’agudesa visual, a la satisfacció de l’usuari, en termes de qualitat visual i comoditat d’ús, i sense alteracions rellevants en la fisiologia ocular detectables en les visites de seguiment.
Nakazawa, Takeshi. "THREE-DIMENSIONAL NON-CONTACT SURFACE PROFILERS FOR SEMICONDUCTOR IC PACKAGE INSPECTION." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/205472.
Повний текст джерелаEinestam, Ragnar, and Karl Casserfelt. "PiEye in the Wild: Exploring Eye Contact Detection for Small Inexpensive Hardware." Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20696.
Повний текст джерелаEye contact detection sensors have the possibility of inferring user attention, which can beutilized by a system in a multitude of different ways, including supporting human-computerinteraction and measuring human attention patterns. In this thesis we attempt to builda versatile eye contact sensor using a Raspberry Pi that is suited for real world practicalusage. In order to ensure practicality, we constructed a set of criteria for the system basedon previous implementations. To meet these criteria, we opted to use an appearance-basedmachine learning method where we train a classifier with training images in order to inferif users look at the camera or not. Our aim was to investigate how well we could detecteye contacts on the Raspberry Pi in terms of accuracy, speed and range. After extensivetesting on combinations of four different feature extraction methods, we found that LinearDiscriminant Analysis compression of pixel data provided the best overall accuracy, butPrincipal Component Analysis compression performed the best when tested on imagesfrom the same dataset as the training data. When investigating the speed of the system,we found that down-scaling input images had a huge effect on the speed, but also loweredthe accuracy and range. While we managed to mitigate the effects the scale had on theaccuracy, the range of the system is still relative to the scale of input images and byextension speed.
Nixon, Alex D. "Visual Performance of Scleral and Soft Contact Lenses in Normal Eyes." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397498763.
Повний текст джерелаWaizenegger, Wolfgang. "Real-time 3D-based Virtual Eye Contact for Video Communication." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20159.
Повний текст джерелаA major problem, that decreases the naturalness of conversations via video communication, is missing eye contact. While a person is looking on the display, she or he is recorded from cameras that are usually attached next to the display frame. With the advent of massively parallel computer hardware and in particular very powerful consumer graphics cards, it became possible to simultaneously process multiple input views for real-time 3D reconstruction. Here, a greater amount of input views mitigate occlusion problems and lead to a more complete set of 3D data that is available for view synthesis. In this thesis, novel algorithms are proposed that enable for high quality real-time 3D reconstruction, the on-line alignment of photometric camera parameters, and the automatic and user independent estimation of the eye contact cameras. The real-time 3D analysis consist of two complementary approaches. On the one hand, a shape based algorithm and on the other hand, a patch based technique that evaluates 3D hypotheses via comparison of image textures. Preparative to rendering, texture from multiple views needs to be aligned. For this purpose, a novel algorithm for photometric on-line adjustment of the camera parameters is proposed. The photometric adjustment is carried out iteratively in alternation with a 3D registration of the respective views. In this way, the quality of photometric parameters is directly linked to the 3D analysis results and vice versa. Based on the textured 3D data, the eye contact view is rendered. An important prerequisite for this task is the estimation of a suitable virtual eye contact camera. In this thesis, a novel approach is formulated that enables for an automatic adaptation to arbitrary new users. Therefor, the eye contact camera is dynamically adapted to the current eye positions of the users. In this way, a virtual communication environment is created that allows for a more natural conversation.
Barreda, Alison M. "Determining Patient Preference for a Pharmacist-Administered Influenza Vaccination Program: Type of Visit and Contact Method for Annual Notification." The University of Arizona, 2009. http://hdl.handle.net/10150/623906.
Повний текст джерелаOBJECTIVES: To determine patient preference for the type of visit for the receipt of the influenza vaccine from the pharmacist and to determine patient preference for contact method for annual notification of the influenza vaccine program. METHODS: This was a descriptive study using a short telephone survey. The first dependent variable was the preferred type of visit comparing appointment-based and predetermined walk-in clinics. The second dependent variable was the preferred method of contact for annual notification of a pharmacist administered influenza vaccination program (telephone, US post mail, email). RESULTS: The telephone survey was completed by 206 patients. Overall, study participants preferred appointment-based visits ( 81.2 %; p < 0.05) compared to a predetermined walk-in clinic (18.8%). Overall, study participants significantly preferred to be contacted for annual notification of a pharmacist administered influenza vaccination program via telephone (75.7%; p< 0.05) compared with US post mail and email. Based on the percentages observed, the second preferred method of contact was email (12.6%) and US post mail was the third preferred method of contact (11.7%). CONCLUSIONS: Patient preference for type of visit for pharmacist-administered influenza vaccine was appointment-based as opposed to predetermined walk-in clinic based. Patient preference for contact method for annual notification was telephone as opposed to email or postal mail.
Grafton, Catherine E. "Binocular vision and three-dimensional motion perception : the use of changing disparity and inter-ocular velocity differences." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1922.
Повний текст джерелаRamalingam, Nagarajan. "Non-contact multispectral and thermal sensing techniques for detecting leaf surface wetness." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1104392582.
Повний текст джерелаTitle from first page of PDF file. Document formatted into pages; contains xxii, 271 p.; also includes graphics (some col.) Includes bibliographical references (p. 206-214).
Li, Qiang. "Effects of Adaptive Discretization on Numerical Computation using Meshless Method with Live-object Handling Applications." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14480.
Повний текст джерелаJones, Helen Mary Fletcher. "Crossing international boundaries : the relevance and effect of international visits, placements and contacts in the training and education of youth and community workers." Thesis, University of Leeds, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444752.
Повний текст джерелаBen-Naser, Abdusalam. "Measurement of range of motion of human finger joints, using a computer vision system." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/12531.
Повний текст джерелаDurand-Texte, Thomas. "Mesure de vibrations par vision 3D." Thesis, Le Mans, 2019. http://www.theses.fr/2019LEMA1003/document.
Повний текст джерелаThe objective of this Ph.D is to study the relevance and limits of 3D vision methods coupled to high-speed cameras and applied to non-contact synchronous vibration measurement, in the vibro-acoustic range of frequencies. A first pseudo stereoscopic set-up, taken from robotics, using a four-mirror adapter in order to generate two virtual viewpoints from a single real camera, has been tested on a plate and a loudspeaker. The results, validated by comparison with those obtained with a laser vibrometre, prove the relevance of the approach, despite some constraints related to the optical elements. In a logic of simplification, three other set-ups have then been proposed and tested, allowing designing two full-field vibration measurement techniques and a method for the Iterative Rectification of Images (IRIs), adapted to the context. The no-mirror method uses a mathematical line to triangulate positions and is basically suited to measure the single-axis vibrations of globally plane objects, displaying non-repeatable displacements along the normal of the surface or along a known axis. The asynchronous cameras technique requires a high-speed and an industrial camera used simultaneously to measure the multi-axis displacements of 3D vibratory phenomena. The results obtained on a car bonnet and a loudspeaker prove its potential to characterise large panels or to carry out end-of-line testing of loud-speakers for example. In conclusion, the three measurement protocols and the associated results are compared in order to assess their respective potentialities and limits in the context of vibration measurement
Sano, Ronaldo Yuiti. "Avaliação oftalmológica e psicofísica do sistema visual de portadores de albinismo." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/47/47135/tde-12122017-090536/.
Повний текст джерелаAlbinism is a rare genetic alteration that compromises the production of melanine in all body tissues. The clinical alterations are the lack of pigment in the skin and hair. It presents important ophthalmological changes that compromise the visual acuity, in most cases. The ophthalmological changes are: ametropia, nystagmus, iris pigmented epithelium rarefaction, retina pigmented epithelium rarefaction, foveal hipoplasia and abnormal optic nerve decussation. This study has been divided in three different parts and had the following main objectives: Part 1, comparative analysis of the iris transparency degree (ITD), the retina transparency degree (RTD) and macular thickness with the visual acuity in albino patients. Part 2: Spatial contrast sensitivity test of luminance and outshine wearing contact lenses with filters in light and dark environments. Part 3: color vision evaluation using the Ishihara Test and the Cambridge Color Test (CCT). For the study 121 individuals with albinism were included with an average of 31,18 years old } 15,47, a total of 242 eyes. The participants were divided in different groups in the three parts of the study, some participated in one or more parts. In the first part the participants have been through an ophthalmological exam, classification of the iris transparency degree (ITD) and the retinal transparency degree (RTD) by a new classification based in 4 different degrees of transparency. Foveal evaluation by the Optic Coherence Tomography exam (OCT) was made in the first part of this study. In the second part, the participants have been submitted to the computerized contrast test, using filtered and transparent contact lenses in light and dark environments. In this part the influence of the filtering lenses in the visual contrast sensitivity in the albinism patients has been evaluated. In the third part, the participants have been submitted to Ishihara Test and Cambridge Color Test in order to evaluate the color vision in albino patients. The results are as follows: Part\' 1: the correlation between visual acuity in Logarithm of the Minimum Angle of Resolution (logMAR) and ITD was positive (+0,569) and significant (p<0,001). The correlation between visual acuity in logMAR and RTD was positive (+0,531) and significant (p<0,001). The correlation between visual acuity in logMAR and the macular thickness was not significant (p=0,105). The correlation between ITD and RTD was positive (+ 0,627) and significant (p<0,001). The correlation between the macular thickness and the ITD was not significant (p=0,397). The correlation between the macular thickness and the RTD was not significant (p=0,458). Part\'2: There has been a statistically significant improvement of the contrast sensitivity wearing the filtering lenses in relation to the transparent ones in bright environment, in the frequencies of 0,3 cycles per degree (cpd), 0,6 cpd and 1,0 cpd. There has been no significant improvement in the frequencies 2,0 cpd and 4,0 cpd. There has been no statistically significant improvement in contrast sensitivity wearing the filtering lenses in relation to the transparent one in the dark environment (shadow) in any of the spatial frequencies studied. Part\' 3: all albinism patients did not present any color vision change in the Ishihara Test. The CCT has shown a worsening in the color detection threshold in the protan axis (p=0,021) and deutan axis (p=0,017), but there has been no difference in the tritan axis (p=0,212). The statistic tests show that a bigger sample is recommended to confirm part 3 results
Toseeb, Mohammed U. "Effect of the Muslim Headscarf on Face Perception. A series of psychological experiments looking at how the Muslim headscarf influences the perception of (South Asian) faces." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5522.
Повний текст джерелаToseeb, Mohammed Umar. "Effect of the Muslim headscarf on face perception : a series of psychological experiments looking at how the Muslim headscarf influences the perception of (South Asian) faces." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5522.
Повний текст джерелаShirazi, Nejad Yegane, and Jessica Nilsson. "Kontaktfamiljsinsatsen : Unga vuxnas upplevelser av insatsen kontaktfamilj som barn." Thesis, Stockholms universitet, Institutionen för socialt arbete - Socialhögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-77596.
Повний текст джерелаTauste, Francés Ana. "Valoración de las alteraciones oculares y visuales asociadas al uso de lentes de contacto en trabajadores expuestos a pantallas de visualización de datos." Doctoral thesis, Universidad de Alicante, 2016. http://hdl.handle.net/10045/70349.
Повний текст джерелаSantos, Rubens Batista. "Relação entre responsabilidade social corporativa e identidade de marca: a visão dos gestores de nível médio numa empresa de contact center em Uberlândia-MG." Universidade Federal de Uberlândia, 2005. https://repositorio.ufu.br/handle/123456789/12037.
Повний текст джерелаEsta dissertação de mestrado procurou compreender o conceito de Responsabilidade Social Corporativa, denominada neste estudo por CSR - Corporate Social Responsibility - com o objetivo de esclarecer as dimensões que esta categoria organizacional assume nos dias atuais, a partir de uma abordagem ética fundamentada na teoria da Business Ethics. Também foi estudado o conceito mercadológico de Sistema de Identidade de Marca, com o objetivo de investigar as dimensões desta categoria que se relacionam com a responsabilidade social corporativa. A partir do referencial teórico foi realizado um estudo de caso com o objetivo de levantar, descrever e analisar como o corpo gerencial de nível médio da ACS (Algar Call Center Service S/A) estabelece a relação entre a gestão da Responsabilidade SocialCorporativa na perspectiva da business ethics e a gestão do Sistema de Identidade de Marca. As evidências foram coletadas por meio de observações, análises de documentos e entrevistas semi-estruturadas, sendo utilizada a abordagem qualitativa. A análise dos dados utilizou como técnica analítica a descrição geral do caso seguida da análise das proposições teóricas, verificando-se a relação das dimensões das categorias de análise com as práticas gerenciais relatadas e observadas no contexto empresarial. Como resultado da pesquisa parece possível afirmar que o alinhamento do sistema de gestão da CSR e da identidade de marca possa auxiliar na tomada de decisão mercadológica por uma proposta de valor que integre benefícios de valor econômico e de valor social à marca. Esta integração dos dois sistemas de gestão estabelece associações genuínas e ricas em significado estético e ético com a marca. Uma identidade de marca fundamentada em valores sociais poderá fortalecer o relacionamento com os stakeholders e promover o respeito à diversidade cultural, características emergentes da gestão empresarial no século XXI.
Déprez, Alexandra. "L'effet de la visite parentale chez le bébé placé en pouponnière : une étude exploratoire des réactions du bébé avant, pendant et après un contact avec ses parents." Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015PA05H111.
Повний текст джерелаOur research is an exploratory study of the reactions of the baby living in residential nursery to parental contact. This study is in continuaty with studies on the effects of early infant neglect and separation. Objectives: explore how babies react to parental contact if all babies have the same benefit to receive visits from their parents, and what are the factors involved in the baby's reaction to parental contact. Method: study of the reaction of a group of 15 infants/babies living in a residential nursery (2-36 months) to contact with their parents on a 24 hours test-re-test protocol evaluating relational withdrawal (ADBB 5 times) , salivary cortisol concentrations (8 times), index of difficult behaviour the day and the night before and after the visit. These variables have been studied in connection with the child's characteristics (age, development, gender, birth order), and those of the parent-child interaction (sensitivity, dyadic synchrony), of the visit (frequency, duration), of the placement (time, reason, age at placement), as well as with parental characteristics (age, depression, anxiety, sensitivity to evaluation, mental health, social support, traumatic experiences, attachment representations). Results: babies do react to parental contact. Three types of reactions have been identified: - babies who respond well to contact with their parents and suffer from separation. These babies have a better development, their parents are more sensitive than those of other groups and they enjoy the visits. Their cortisol levels drop to visit and rise back at separation. - Babies who react by more relational withdrawal in contact with their parents: these babies show no distress at separation. They appear better adapted to life in the institution (less relational withdrawal). Their parents are much less sensitive than the others. Their cortisol levels are generally high even during the visit. These babies are placed sooner than the other two groups. -Babies who show no reaction to contact with their parents in terms of relational withdrawal. They have generally lower concentrations of cortisol. They cannot be particularly distinguished from the other with regard of all characteristics that have been evaluated. This group appears at psychopathological risk since it shows a consistently high level of relational withdrawal associated with lower levels of salivary cortisol and lower reactivity of the HPA axis. The research also highlighted the effect of different variables on the baby's reactions to parental visit. The most important ones seem to be the quality of parent-child interaction, child development, and the characteristics of the placement and the visit. Various effects have been highlighted: - grief effect when returning from visit for children who have had good contact with their parents. - An anticipatory effect of stress of the visit for babies who react badly to contact with their parents. - A relief effect returning from visit for babies that react poorly to contact with their parents. - A contamination effect for some children the day after the visit, those babies belonging to the group of children who respond poorly to contact with their parents. - A positive effect of the visit for children who respond well in contact with parents. Results are discussed in relation to literature, and in terms forensic implications and of clinical and research applications of maintaining contact between babies and parents separated by placement in the field of child protection
McCarthy, Christopher Darryl. "Visual contact estimation." Phd thesis, 2010. http://hdl.handle.net/1885/150593.
Повний текст джерелаChen, Wen-Lin, and 陳玟伶. "Automated Inspection of Electric Contact Rivets UsingComputer Vision." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/58s3wm.
Повний текст джерела國立臺北科技大學
工業工程與管理研究所
95
Electric contacts for switches, breakers and relays play a very important role in electric industry. In this paper, we propose an automated visual Inspection system for electric contact rivets using computer vision .The system is developed based-on spatial domain information of defects, and classifies the surface defects including cracks, breaks, and scratches. Furthermore, this study proposes a machine vision-based roundness measuring method that applies Particle Swarm Optimization Algorithm (PSO) , modified Hooke –Jeeves Pattern Search and Simulated annealing algorithms (SA) for computing the roundness measurement of maximum inscribing circle (MIC), minimum circumscribing circle (MCC). Experimental results show the modified Hooke –Jeeves Pattern Search-based method outperforms PSO-based method and SA-based method in both accuracy and the efficiency.
Huang, Mei-Ling, and 黃美玲. "The vision contact under the sliding shelters:The container object of the vision layers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/e6aads.
Повний текст джерела國立臺南藝術大學
建築藝術研究所
106
Even imperfection, frailness, coward……are all part of us, we have been complete with them. Most of people in Taiwan prefer “science”, “statistics”, which can be quantified. But author think that there are many things so important for human being cannot be quantified, like emotion, taste, experience. This kind of social value makes people seldom talk about feelings, and it causes people to feel less and depress sentiments. It’s a great pity. Author think that our life consisted of every simple thing, feeling…If we against feeling emotion, then we reject a part of life. The author hope the work can remind people that emotion is essential for us. It can take us to find out the new vision of life. The art work is also the way for author to check herself during the studying process in Interbreeding Field. With several experiences of art collective creations, author learn the concepts of that the “Building” can be the way to make the art works, and also learn about how to feel the relations between human and surroundings. Then the author back to the place where the journey start, and create the art work with her own experience. The author trying to discuss her art work, which was created with the interplay between bodily perception and emotions and the creative techniques learned in these years in the paper. In the art space, the author using kinds of container objects to highlight the layers in the environment, with that visitors can find out the beauty they never pay attention in daily life. The container objects also build the peaceful space, and visitors can get rid of the values imposed by society, look back their life with different attitude and perspectives. Hope the sharing "I am who I am", can let the viewers find out and accept the true selves.
Santos, Maria. "Visão Integrada do Contacto com Cliente numa Empresa da Indústria de Bebidas." Dissertação, 2013. http://hdl.handle.net/10216/73728.
Повний текст джерелаSantos, Maria Teresa Alves Coelho dos. "Visão Integrada do Contacto com Cliente numa Empresa da Indústria de Bebidas." Master's thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/69411.
Повний текст джерела